Belarus 1523, Operating Manual

Page: 73 / 312

BELARUS-1523/1523 В /1523.3 /1523В.3 Construction and Operation
70
Pneumatic Compressor
To ensure reliable operation of the trac-
tor pneumatic system and tyre inflation,
the engine is equipped with a single-
piston, single-stage compressor. When
performing the agricultural works which
do not require the energy of com-
pressed air, the compressor shall be
turned OFF.
The compressor is mounted on the fuel
distribution unit cover flange and driven
from the fuel-pump drive gear. The
compressor is air-cooled. When the
compressor is running, the fan shall be
switched to the forced mode.
The compressor delivery is 180 l/min at a
backpressure of 0.6 MPa (6 kgf/cm
2
) and
the rated rotational speed.
NOTE:
With the compressor running,
the engine fan shall be switched to the
forced mode.
1 – ball-bearing body; 2 – compressor drive intermediate gear; 3 – shaft with a compressor engagement
eccentrically-located pin; 4 – lever for engaging the compressor; 5 – shaft lock; 6 – spring; 7 – shaft lock
bolt; 8 – compressor crankcase; 9 – crankshaft with a drive pinion; 10 – connecting rod; 11 – piston pin;
12 – plate; 13 – pressure valve; 14 – restraint; 15 – cylinder head; 16 – suction valve; 17 – piston; 18 –
compression ring; 19 – segments, expanders (oil scraper piston ring); 20 – cylinder; 21 – seal; 22 –
spring.